The TPA6211A1-Q1 device requires adequate power supply decoupling to ensure a high efficiency operation with low total harmonic distortion (THD). Place a low equivalent series resistance (ESR) ceramic capacitor, typically 0.1 µF, as close as possible of the V_DD pin. This choice of capacitor and placement helps with higher frequency transients, spikes, or digital hash on the line. TI recommends placing a 2.2-µF to 10-µF capacitor on the V_DD supply trace. This larger capacitor acts as a charge reservoir, providing energy faster than the board supply, thus helping to prevent any droop in the supply voltage.